Tezzeret the Seeker
Legendary Planeswalker - Tezzeret | Loyalty: 4 (CMC 5)
+1: Untap up to two target artifacts.
-X: Search your library for an artifact card with converted mana cost X or less and put it onto the battlefield. Then shuffle your library.
-5: Artifacts you control become artifact creatures with base power and toughness 5/5 until end of turn.